---
title: constituentFileURLs
framework: avfoundation
role: symbol
role_heading: Type Property
path: avfoundation/avpartialasyncproperty/constituentfileurls
---

# constituentFileURLs

The list of file URLs used by the MediaExtension that constitute the asset. The list of file URLs that constitute the asset are returned only for QuickTime reference movies, or if the MediaExtension format reader implements this property [MEFileInfo setConstituentFileNames:].

## Declaration

```swift
static var constituentFileURLs: AVAsyncProperty<Root, [URL]> { get }
```